I posted the following back in July and I can't say that my opinion has really changed at all.
From the archives of TFL -
As a Private in the Australian Army Reserve I've obvioulsy had quite a bit of experience with the Aug.
And despite the fact that I'm very proficient with it, despite KSFreeman's comments about bullpups, I'd never buy one especially if it was more expensive than an AR.
On its own its an alright 'assault rifle'. My problem with the Aug is that with a few minor adjustments it could be so much better.
Andrew Wyatt might find the 'donut of death' scope reticle to be 'neat', but I find it damned annoying. Especially when trying to conduct aimed shots on targets out to 200 and 300 yards. As there is no central point to the reticle you're basically guessing where the bullet will land at those distances.
Plus only having a 1.5x powered scope is a complete waste of time in my opinion. It should be 2x at least, but I'd prefer 3x.
Granted the AugA (A1?) model now has a picattiny rail, but those aren't in general service yet.
The barrels are to thin, and overheat quickly. Plus there have been occasions where someone bent the barrel of an Aug by hitting a hard surface while conducting bayonet drills. Great confidence booster there, not....
The cocking handle is far to weak, and can easily break if you're to rough with an Aug ( ie conducting an Army obstacle course ).
The lack of a proper trigger guard has caused many a ND by Australian soldiers. Add to that the fact that the drop safety feature is apparently not 100% reliable.
The forward hand grip might help control full-auto/burst fire, but due to the fact that it is slightly loose and wobbles, causes accuracy of aimed fire to be reduced.
A professional shooter I went through basic training with frequently got 3moa with the Aug, but not much better than that. However that may well be due to the fact that his rifle had been treated like **** by army recruits for years on end.
So like I said with a few minor adjustments the Aug could be quite a damned good rifle (but still not the best), however adjustments equats to money which means there will be no improvement to the Aug's in service.
So basically, if your used to the Aug and have been trained on the Aug to the point where you know what it can and can't do, it will get the job done. But its not the best, and there are much better options out there.